CN111138823A - Noise-reduction permanent antistatic polycarbonate styrene resin alloy and preparation method thereof - Google Patents

Abstract

The invention relates to a noise-reducing permanent antistatic polycarbonate styrene resin alloy and a preparation method thereof. The invention simultaneously endows the polycarbonate styrene resin alloy with noise reduction property and permanent antistatic property by introducing the antistatic resin and the compatilizer, and is very suitable for being applied to the fields of automobiles, household appliances and the like.

Description

Noise-reduction permanent antistatic polycarbonate styrene resin alloy and preparation method thereof

Technical Field

The invention belongs to the field of resin alloys, and particularly relates to a noise-reducing permanent antistatic polycarbonate styrene resin alloy and a preparation method thereof.

Background

Polycarbonate resin is colorless and transparent, has excellent heat resistance, high strength and impact resistance, and is dimensionally stable, and belongs to engineering plastics with wide application. The styrene resin mainly comprises acrylonitrile-butadiene-styrene copolymer, acrylonitrile-acrylate-styrene copolymer and acrylonitrile-ethylene propylene diene monomer-styrene copolymer, and has excellent impact strength, good processing performance and chemical stability due to the coordination of the excellent performances of the three components, is easy to mold, has rich luster, has toughness and flexibility, and has excellent comprehensive performance. The polycarbonate and styrene resin alloy combines the advantages of the resins of all components, and is widely applied to the industries of automobile industry, electronic and electric appliance industry, light industry and household appliances, textile, building and the like due to the excellent comprehensive performance of the polycarbonate and styrene resin alloy. In recent years, the automobile industry has more and more high attention to noise in an automobile and dust contamination of parts in the automobile, the noise in the automobile mainly comes from extrusion of combined parts in the automobile and friction among the parts, and the greater noise in the automobile directly influences physical and mental health of a driver and passengers, and even influences driving safety. The parts in the automobile are easy to be stained with dust, so that the appearance is not only influenced, but also the health of people is influenced when the parts are excessively accumulated.

Not only in the automobile field, but also in other fields such as household appliances and electronic appliances, the product with antistatic and noise reducing functions will undoubtedly bring more healthy and comfortable experience to consumers. Polycarbonate styrene alloy materials are widely applied to various national fields, so that the development and design of the alloy with antistatic and noise reduction characteristics have important value and significance.

Disclosure of Invention

The invention aims to solve the technical problem of providing a noise-reducing permanent antistatic polycarbonate styrene resin alloy and a preparation method thereof, which can obviously improve the noise-reducing and antistatic properties of the alloy resin, and can replace the common polycarbonate styrene resin alloy on parts such as automobile household appliances and the like to prevent dust pollution and reduce noise.

The invention provides a noise-reducing permanent antistatic polycarbonate styrene resin alloy which comprises the following components in percentage by weight:

the polycarbonate resin is prepared by adopting one or two of phosgene method polymerization or ester exchange method polymerization.

The styrene resin is one or more of acrylonitrile-butadiene-styrene resin, acrylonitrile-acrylate-styrene resin and acrylonitrile-ethylene propylene diene monomer-styrene resin.

The antistatic resin is a block copolymerization thermoplastic elastomer with a polyamide hard segment and a polyether soft segment.

The auxiliary agent is one or more of an antioxidant, a light stabilizer, a lubricant and toner.

The antioxidant is hindered phenol antioxidant and/or phosphite antioxidant; the light stabilizer is a benzotriazole UV absorbent; the lubricant is pentaerythritol stearate.

The invention also provides a preparation method of the noise-reducing permanent antistatic polycarbonate styrene resin alloy, which comprises the following steps:

firstly, uniformly mixing all the components according to a ratio, then adding the mixture into a double-screw extruder, and performing melt blending extrusion granulation to obtain the composite material; wherein the melting temperature is 220-250 ℃.

Advantageous effects

The invention can simultaneously endow the polycarbonate styrene resin alloy with noise reduction and permanent antistatic property by introducing the compatilizer and the antistatic resin. The antistatic resin can play an antistatic role, the compatilizer can improve the compatibility of the polycarbonate and the styrene resin, in addition, the antistatic resin has ester exchange reaction with the polycarbonate resin, and the antistatic resin and the styrene resin also have good compatibility due to the existence of the compatilizer, so the antistatic resin can form a stable interpenetrating network structure with high damping property in an alloy system, and the prepared polycarbonate styrene resin alloy has the characteristics of noise reduction and permanent antistatic property and has excellent mechanical property and processing property; the resin alloy has simple preparation process and low equipment requirement, is suitable for industrial production, and can be widely applied to the fields of automobile household appliances and the like.

Detailed Description

The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.

The embodiment selects the following components:

polycarbonate resin 1, produced by phosgene method, japan sheen, brand PC FN 2200;

polycarbonate resin 2, produced by the transesterification method, Qimei Taiwan, brand PC-110;

styrene resin 1, acrylonitrile-butyl acrylate-styrene resin, shanghai high bridge petrochemical company, designation ABS 8434;

styrene resin 2, acrylonitrile-butyl acrylate-styrene resin, Taiwan Qimei, brand ASA PW-997S;

a compatibilizer, acrylonitrile-butadiene-styrene grafted glycidyl methacrylate resin, commercially available;

antistatic resins, Pebax resins, acra;

the antioxidant is a mixture of hindered phenol antioxidant and phosphite ester antioxidant, and is produced and provided by Ciba company;

the light stabilizer is selected from Tinuvin 328 from Ciba;

the lubricant is pentaerythritol stearate, which is available from LOZA corporation under the trademark GLYCOLUBE-P.

Examples 1 to 5 and comparative examples l to 2

The dried polycarbonate resin, styrene resin, compatibilizer, antistatic resin, antioxidant, light stabilizer and lubricant were mixed according to the formulation shown in table 1 and then fed into the main barrel of a twin-screw extruder (screw diameter 35mm, length-diameter ratio L/D48). Controlling the temperature of each section of the main machine cylinder (from the feed inlet to the outlet of the machine head) to be 220 ℃, 235 ℃, 245 ℃, 250 ℃ and 245 ℃, and controlling the rotating speed of the double screw to be 300 revolutions per minute, and cooling the extruded strips by a water tank and then cutting into granules to obtain the product.

TABLE 1 composition formula (parts by weight)

Drying the product in a forced air oven at 80 ℃ for 4 hours, and then performing injection molding on the product by using a plastic injection molding machine to obtain a standard sample bar and a 100mm 3mm sample plate, wherein the injection molding temperature is 250 ℃; the injection molded bars and plaques were tested for performance after standing at 23 ℃ for at least 24 hours at 50% relative humidity.

The product performance test method comprises the following steps:

the Charpy impact strength is tested according to the ISO 179 standard;

the Vicat softening point is tested according to the ISO 306 standard;

flexural modulus, tested according to ISO 178 standard;

melt index, measured according to ISO 1133 standard;

surface resistivity, measured according to ISO 3915 standard;

the noise hazard value was evaluated and tested according to the German Association for automotive industries standards.

The results of the performance tests on each sample are shown in table 2.

Table 2 results of performance testing

Note: noise hazard value of 10 segments, 1-3 low risk, 4-5 gray area, 6-10 high risk

As can be seen from table 2: the antistatic resin is added into the polycarbonate styrene resin alloy prepared by the invention, so that the surface resistivity can be obviously reduced, and the long-term antistatic performance is good. It is noted that the addition of both a compatibilizing agent and an antistatic resin can achieve both noise reduction and permanent antistatic properties. The compatilizer can improve the compatibility of the polycarbonate and the styrene resin, in addition, ester exchange reaction exists between the antistatic resin and the polycarbonate resin, and simultaneously, the antistatic resin and the styrene resin have good compatibility due to the existence of the compatilizer, so the antistatic resin can form a stable interpenetrating network structure with high damping property in an alloy system, and the prepared polycarbonate styrene resin alloy has the characteristics of noise reduction and permanent antistatic property and excellent comprehensive properties such as mechanical processing and the like.

The examples are given solely for the purpose of illustration and are not to be construed as limitations of the present invention, as many insubstantial modifications and adaptations of the invention may be made by those skilled in the art based on the teachings herein.

Claims (7)

1. A noise-reducing permanent antistatic polycarbonate styrene resin alloy is characterized in that: comprises the following components in percentage by weight:

2. the resin alloy according to claim 1, wherein: the polycarbonate resin is prepared by adopting one or two of phosgene method polymerization or ester exchange method polymerization.

3. The resin alloy according to claim 1, wherein: the styrene resin is one or more of acrylonitrile-butadiene-styrene resin, acrylonitrile-acrylate-styrene resin and acrylonitrile-ethylene propylene diene monomer-styrene resin.

4. The resin alloy according to claim 1, wherein: the antistatic resin is a block copolymerization thermoplastic elastomer with a polyamide hard segment and a polyether soft segment.

5. The resin alloy according to claim 1, wherein: the auxiliary agent is one or more of an antioxidant, a light stabilizer, a lubricant and toner.

6. The resin alloy according to claim 5, wherein: the antioxidant is hindered phenol antioxidant and/or phosphite antioxidant; the light stabilizer is a benzotriazole UV absorbent; the lubricant is pentaerythritol stearate.

7. A method for preparing a noise-reducing permanent antistatic polycarbonate styrenic resin alloy as defined in claim 1, comprising:

firstly, uniformly mixing all the components according to a ratio, then adding the mixture into a double-screw extruder, and performing melt blending extrusion granulation to obtain the composite material; wherein the melting temperature is 220-250 ℃.